CVE-2024-36492— Existing local user overwritten by malicious remote
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I. Basic Information for CVE-2024-36492
Vulnerability Information
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Vulnerability Title
Existing local user overwritten by malicious remote
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to disallow the modification of local users when syncing users in shared channels. which allows a malicious remote to overwrite an existing local user.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mattermost 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost 存在安全漏洞，该漏洞源于在共享频道中同步用户时未能禁止修改本地用户。这允许恶意远程人员覆盖现有的本地用户。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Mattermost | Mattermost | 9.9.0 | - |
II. Public POCs for CVE-2024-36492
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2024-08-01 · 10 CVEs total
| CVE-2024-39274 | 8.7 HIGH | Malicious remote can add users to arbitrary teams and channels |
| CVE-2024-39777 | 8.7 HIGH | Malicious remote can invite itself to an arbitrary local channel |
| CVE-2024-39832 | 6.8 MEDIUM | Permanently local data deletion by malicious remote |
| CVE-2024-41144 | 5.5 MEDIUM | Malicious remote can create/update/delete arbitrary posts in arbitrary channels |
| CVE-2024-39839 | 4.3 MEDIUM | Remote username set to an arbitrary string by remote user |
| CVE-2024-41162 | 4.1 MEDIUM | Malicious remote can make an arbitrary local channel read-only |
| CVE-2024-39837 | 3.8 LOW | Malicious remote can create arbitrary channels |
| CVE-2024-29977 | 2.7 LOW | Malicious remote can create arbitrary reactions on arbitrary posts |
| CVE-2024-41926 | 2.7 LOW | Malicious remote can claim that a user was synced from another remote |
IV. Related Vulnerabilities
Same product: Mattermost
- CVE-2026-3590
Race Condition in Guest Magic Link Authentication Allows Tok - CVE-2026-28741
CSRF Protection Bypass Allows Updating a User's Authenticati - CVE-2026-27769
Connected Workspaces: Malicious remote server can manipulate - CVE-2026-24661
Unbounded Request Body Read in MS Teams Plugin {{/changes}} - CVE-2026-21388
Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}
Same vendor: Mattermost
- CVE-2026-3590
Race Condition in Guest Magic Link Authentication Allows Tok - CVE-2026-28741
CSRF Protection Bypass Allows Updating a User's Authenticati - CVE-2026-27769
Connected Workspaces: Malicious remote server can manipulate - CVE-2026-24661
Unbounded Request Body Read in MS Teams Plugin {{/changes}} - CVE-2026-21388
Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}
Same weakness: CWE-284
- CVE-2026-8233
Dotouch XproUPF access control - CVE-2026-42569
phpvms: /importer authorization bypass causing full database - CVE-2026-42205
Avo: Broken Access Control: Unauthorized Execution of Arbitr - CVE-2026-41487
Langfuse: Improper role-based-access control in Langfuse LLM - CVE-2026-42278
UltraDAG: Smart Account Spending Policy Bypass via Pockets
V. Comments for CVE-2024-36492
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